SCHEDULE 14A

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934

Filed by the registrant x

Filed by a party other than the registrant o

Check the appropriate box:

o Preliminary proxy statement.

o Confidential, for use of the Commission only (as permitted by Rule 14a-6(e)(2)).

o Definitive proxy statement.

x Definitive additional materials.

o Soliciting materials pursuant to Rule 14a-11(c) or Rule 14a-12.

UNITED BANCORP, INC.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of filing fee (check appropriate box):

x No fee required.

o Fee computed on table below per Exchange Act Rules 14a-6(I)(1) and 0-11.

(1) Title of each class of security to which transaction applies:

(2) Aggregate number of securities to which transaction applies:

(3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4) Proposed maximum aggregate value of transaction:

(5) Total fee paid:

o Fee paid previously with preliminary materials.

o Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.

(1) Amount Previously Paid:

(2) Form, Schedule or Registration Statement No.:

(3) Filing Party:

(4) Date Filed:

 

 ANNUAL MEETING OF SHAREHOLDERS OF UNITED BANCORP, INC. INTERNET ­Access “www.voteproxy.com” and follow the on­screen instructions or scan the QR code with your smartphone. Have your proxy card available when you access the web page. TELEPHONE ­Call toll­free 1­800­PROXIES (1­800­776­9437) in the United States or 1­718­921­8500 from foreign countries from any touch­tone telephone and follow the instructions. Have your proxy card available when you call. Vote online/phone until 11:59 PM EST the day before the meeting. MAIL ­Sign, date and mail your proxy card in the envelope provided as soon as possible. IN PERSON ­You may vote your shares in person by attending the Annual Meeting. GO GREEN ­e­Consent makes it easy to go paperless. With e­Consent, you can quickly access your proxy material, statements and other eligible documents online, while reducing costs, clutter and paper waste. Enroll today via www.astfinancial.com to enjoy online access. COMPANY NUMBER ACCOUNT NUMBER NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The 2018 Annual Report to shareholders, Notice of Meeting, proxy statement and proxy card are available at ­http://www.astproxyportal.com/ast/06954/ Please detach along perforated line and mail in the envelope provided IF you are not voting via telephone or the Internet. 20530403000000000000 3 041719 PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE